Lag Spikes

I don't know why but my Minecraft Bedrock is lagging. Specs are 8 GIGS RAM, GTX 1650, Core i5 9th gen. Even with these specs, the lag isn't going away. FPS also goes down on server when I PVP with other players. I also have a stronger computer but the lag is even worse there. GTX 1060 with 16 gigs and core i5 8th gen. Now, when I watch YouTube, everyone's FPS is fine even on a weaker computer with the same graphics settings. I don't know why it is only happening to my computer.